French additions (Cargo) (#5040)

Minor French text additions

addons/cargo/stringtable.xml

@@ -243,6 +243,7 @@
             <Japanese>空中投下</Japanese>
             <Polish>Zrzut zaopatrzenia</Polish>
             <Korean>공중 투하</Korean>
+            <French>Largage aérien</French>            
         </Key>
         <Key ID="STR_ACE_Cargo_unlevelFlightWarning">
             <English>Unlevel Flight</English>
@@ -250,6 +251,7 @@
             <Japanese>機体が水平ではありません</Japanese>
             <Polish>Nierówny lot</Polish>
             <Korean>기체가 수평이 아닙니다</Korean>
+            <French>Rétablir l'assiette</French>            
         </Key>
     </Package>
 </Project>